/*
 * ZooInspector
 * 
 * Copyright 2010 Colin Goodheart-Smithe

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
 */
package org.apache.zookeeper.inspector.manager;

/**
 * A utility class for storing a pair of objects
 * 
 * @author CGSmithe
 * 
 * @param <K>
 * @param <V>
 */
public class Pair<K, V>
{
	private K key;
	private V value;

	/**
	 * @param key
	 * @param value
	 */
	public Pair(K key, V value)
	{
		this.key = key;
		this.value = value;
	}

	/**
	 * 
	 */
	public Pair()
	{
		// Do Nothing
	}

	/**
	 * @return key
	 */
	public K getKey()
	{
		return key;
	}

	/**
	 * @param key
	 */
	public void setKey(K key)
	{
		this.key = key;
	}

	/**
	 * @return value
	 */
	public V getValue()
	{
		return value;
	}

	/**
	 * @param value
	 */
	public void setValue(V value)
	{
		this.value = value;
	}

	@Override
	public String toString()
	{
		return "Pair [" + key + ", " + value + "]";
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Object#hashCode()
	 */
	@Override
	public int hashCode()
	{
		final int prime = 31;
		int result = 1;
		result = prime * result + ((key == null) ? 0 : key.hashCode());
		result = prime * result + ((value == null) ? 0 : value.hashCode());
		return result;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	@Override
	public boolean equals(Object obj)
	{
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Pair<?, ?> other = (Pair<?, ?>) obj;
		if (key == null)
		{
			if (other.key != null)
				return false;
		}
		else if (!key.equals(other.key))
			return false;
		if (value == null)
		{
			if (other.value != null)
				return false;
		}
		else if (!value.equals(other.value))
			return false;
		return true;
	}

}
